Ingredients
The following ingredients have 4 Servings
- 2 1/2 cups of cake flour
- 3/4 cup all-purpose flour
- 1 tablespoon baking powder
- 1 teaspoon baking soda
- 3/4 teaspoon salt
- 1/2 cup 1 stick unsalted butter, softened
- 1/2 cup vegetable shortening
- 1 3/4 cups sugar
- 1 tablespoon pure vanilla extract
- 1 large egg
- 1 1/2 cups ice cold water
- 3 large egg whites (at room temperature)
- 1/4 teaspoon cream of tartar
- 6 ounces white chocolate (coarsely chopped)
- 1 1/2 cups sugar
- 1/3 cup all-purpose flour
- 1 1/2 cups milk
- 1/3 cup heavy cream
- 1 1/2 cups 3 sticks unsalted butter, soft but cool, cut into small pieces
- 1 teaspoon pure vanilla extract
